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Lenovo 7N47A00096 1.92tb Thinksystem U.2 Pcie Ssd Px04pmb Mainstream Nvme 3.0 X4 Hot
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Non-Volatile Memory Express (NVMe) is new PCIe 3.0 high performance SSD technology that provides high I/O throughput and low latency. NVMe interfaces remove SAS/SATA bottlenecks and unleash all of the capabilities of contemporary NAND flash memory. Each NVMe PCI SSD has direct PCIe 3.0 x4 connection, which provides at least 2x more bandwidth and 2x less latency than SATA/SAS-based SSD solutions. NVMe drives are also optimized for heavy multi-threaded workloads by using internal parallelism and many other improvements, such as enlarged I/O queues.
The Lenovo NVMe Enterprise Mainstream PCIe SSD have the following features:
2.5-inch drive (U.2) or 3.5-inch drive bay form factor
Based on the Toshiba PX04P drives, PX04PMBxxx
19nm MLC NAND (128 Gb/die)
3 drive-write-per-day (DWPD) SSD for mixed read-write workloads
Direct PCIe 3.0 x4 connection for each NVMe drive, resulting in up to 4 GBps overall throughput.
Full Power-Loss-Protection and End-to-End Data Protection
Low power consumption (maximum 18.5 W)
Enterprise Mainstream SSDs and Enterprise Performance SSDs have similar read and write IOPS performance, but the key difference between them is their endurance (or lifetime) (that is, how long they can perform write operations because SSDs have a finite number of program/erase (P/E) cycles). Enterprise Mainstream SSDs have a better cost/IOPS ratio but lower endurance compared to Enterprise Performance SSDs. SSD write endurance is typically measured by the number of program/erase (P/E) cycles that the drive incurs over its lifetime, listed as the total bytes of written data (TBW) in the device specification.
The TBW value assigned to a solid-state device is the total bytes of written data (based on the number of P/E cycles) that a drive can be guaranteed to complete (% of remaining P/E cycles = % of remaining TBW). Reaching this limit does not cause the drive to immediately fail. It simply denotes the maximum number of writes that can be guaranteed. A solid-state device will not fail upon reaching the specified TBW. At some point based on manufacturing variance margin, after surpassing the TBW value, the drive will reach the end-of-life point, at which the drive will go into a read-only mode.
Because of such behavior by Enterprise Mainstream solid-state drives, careful planning must be done to use them only in mixed read-write environments to ensure that the TBW of the drive will not be exceeded before the required life expectancy.
For example, the 1.92TB NVMe 2.5" Enterprise Mainstream PCIe SSD has an endurance of 10,412 TB of total bytes written (TBW). This means that for full operation over five years, write workload must be limited to no more than 5,705 GB of writes per day, which is equivalent to 3.0 full drive writes per day (DWPD). For the device to last three years, the drive write workload must be limited to no more than 9,509 GB of writes per day, which is equivalent to 5.0 full drive writes per day.
|BLT Item #:||B1BF727|
|Mfg. Part #:||7N47A00096|
|Description:||1.92TB THINKSYSTEM U.2 PCIE SSD PX04PMB MAINSTREAM NVME 3.0 X4 HOT (SHIPS FROM MFG)|
|Suggested Retail Price:||$4,999.00|
|Brand and Item Information|
|Name:||Lenovo PX04PMB 1920 GB PCI Express 3.0 2.5"|
|Brief Description:||Lenovo PX04PMB, 1920 GB, 2.5", PCI Express 3.0|
|Expanded Description:||Lenovo PX04PMB. Solid-state drive capacity: 1920 GB. SSD form factor: 2.5". Solid-state drive interface: PCI Express 3.0, Component for: Server/workstation|
|Weight & Dimensions|
|Width:||2.76" (7.00 cm)|
|Depth:||3.94" (10.00 cm)|
|Height:||0.591" (1.50 cm)|
|Weight:||0.33 lbs (150 g)|
|Power consumption (max):||18.5 W|
|Operating temperature (T-T):||0 - 40 °C|
|Storage temperature (T-T):||-40 - 70 °C|
|Operating relative humidity (H-H):||5 - 95 %|
|Storage relative humidity (H-H):||5 - 95 %|
|Operating vibration:||2.17 G|
|Operating shock:||1000 G|
|Maximum operating altitude:||215984.3" (5.49 km)|
|Maximum non-operating altitude:||480000" (12.19 km)|
|Package width:||5.24" (13.30 cm)|
|Package depth:||6.85" (17.40 cm)|
|Package height:||2.48" (6.30 cm)|
|Package weight:||1.10 lbs (500 g)|
|SSD form factor:||2.5"|
|Solid-state drive capacity:||1920 GB|
|Solid-state drive interface:||PCI Express 3.0|
|NVM Express (NVMe) supported:||Y|
|NVM Express (NVMe) version:||3.0|
|Latency (read):||100 µs|
|Latency (write):||30 µs|
|Sequential read speed (ATTO):||3100 MB/s|
|Sequential write speed (ATTO):||2350 MB/s|
|Maximum read (4KB):||660000 IOPS|
|Maximum write (4KB):||105000 IOPS|
|Mean time between failures (MTBF):||2000000 h|
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